Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Anhydrite from
Orange Quarry Company Quarry (Eagle Rock Quarry), West Orange, West Orange, Essex County, New Jersey, USA


Locality type:Quarry
Classification
Species:Anhydrite
Formula:CaSO4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Anhydrite data
Locality Data:Click here to view Orange Quarry Company Quarry (Eagle Rock Quarry), West Orange, West Orange, Essex County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:490287
Long-form Identifier:1:3:490287:4
GUID (UUID V4):0
Nearest other occurrences of Anhydrite
9.6km (6.0 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
12.5km (7.8 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
12.6km (7.8 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
13.1km (8.2 miles) ⓘHoudaille Quarry (Summit Quarry; Commonwealth Quarry), Springfield, Springfield Township, Union County, New Jersey, USA
15.4km (9.6 miles) ⓘBraen Quarry, Haledon, Passaic County, New Jersey, USA
16.6km (10.3 miles) ⓘProspect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
20.8km (12.9 miles) ⓘFanwood Quarry (Weldon Quarry), Watchung, Somerset County, New Jersey, USA
28.2km (17.5 miles) ⓘMillington Quarry, Bernards Township, Somerset County, New Jersey, USA
36.3km (22.5 miles) ⓘChimney Rock Quarry, Bridgewater Township, Somerset County, New Jersey, USA
43.7km (27.2 miles) ⓘSterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
References
Cummings, W. L., 2007, Personal communication
 
and/or  
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